4746f25ac6
[skip ci] Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/7829)
68 lines
1.9 KiB
Text
68 lines
1.9 KiB
Text
=pod
|
|
|
|
=head1 NAME
|
|
|
|
RAND_DRBG_set_ex_data,
|
|
RAND_DRBG_get_ex_data,
|
|
RAND_DRBG_get_ex_new_index
|
|
- store and retrieve extra data from the DRBG instance
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/rand_drbg.h>
|
|
|
|
int RAND_DRBG_set_ex_data(RAND_DRBG *drbg, int idx, void *data);
|
|
|
|
void *RAND_DRBG_get_ex_data(const RAND_DRBG *drbg, int idx);
|
|
|
|
int RAND_DRBG_get_ex_new_index(long argl, void *argp,
|
|
CRYPTO_EX_new *new_func,
|
|
CRYPTO_EX_dup *dup_func,
|
|
CRYPTO_EX_free *free_func);
|
|
|
|
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
RAND_DRBG_set_ex_data() enables an application to store arbitrary application
|
|
specific data B<data> in a RAND_DRBG instance B<drbg>. The index B<idx> should
|
|
be a value previously returned from a call to RAND_DRBG_get_ex_new_index().
|
|
|
|
RAND_DRBG_get_ex_data() retrieves application specific data previously stored
|
|
in an RAND_DRBG instance B<drbg>. The B<idx> value should be the same as that
|
|
used when originally storing the data.
|
|
|
|
For more detailed information see L<CRYPTO_get_ex_data(3)> and
|
|
L<CRYPTO_set_ex_data(3)> which implement these functions and
|
|
L<CRYPTO_get_ex_new_index(3)> for generating a unique index.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
RAND_DRBG_set_ex_data() returns 1 for success or 0 for failure.
|
|
|
|
RAND_DRBG_get_ex_data() returns the previously stored value or NULL on
|
|
failure. NULL may also be a valid value.
|
|
|
|
|
|
=head1 NOTES
|
|
|
|
RAND_DRBG_get_ex_new_index(...) is implemented as a macro and equivalent to
|
|
CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DRBG,...).
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<CRYPTO_get_ex_data(3)>,
|
|
L<CRYPTO_set_ex_data(3)>,
|
|
L<CRYPTO_get_ex_new_index(3)>,
|
|
L<RAND_DRBG(7)>
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
|
Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
this file except in compliance with the License. You can obtain a copy
|
|
in the file LICENSE in the source distribution or at
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|